Calculate the direct distance between two cities from their coordinates.
The direct distance is the floor for any journey; roads, terrain and airspace all add to it. Driving distance typically runs a fifth to a third longer than the straight line. Direct distance is the right basis for comparing options, but never for estimating journey time without a road factor applied.
Distance Between Cities
Straight-line distance = Earth radius × central angle between the city coordinates
Straight-line distance = Earth radius × central angle between the city coordinates The direct distance is the floor for any journey; roads, terrain and airspace all add to it. Driving distance typically runs a fifth to a third longer than the straight line.
Direct distance is the right basis for comparing options, but never for estimating journey time without a road factor applied.
This calculator takes 4 inputs: First latitude, First longitude, Second latitude, Second longitude. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.